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There are 6 colors available for painting a house. A combination for painting a house consists of one of the 6 colors for the trim of the house and one different color from the 6 colors for the rest of the house. How many different combinations for painting a house are available?
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· 相关考点
6.3.1 基本计数原理与加法原理
6.3.1 基本计数原理与加法原理
以上解析由 考满分老师提供。
